package com.sdau.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.sdau.reggie.common.R;
import com.sdau.reggie.entity.Employee;
import com.sdau.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录处理
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
        //1.将页面提交的密码进行MD5加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据用户名查数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<Employee>();
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
        Employee employee1 = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则返回登录失败结果
        if (employee1 == null) {
            return R.error("登录失败");
        }

        //4.密码比对，不一致返回登录失败结果
        if (!employee1.getPassword().equals(password)) {
            return R.error("登录失败");
        }

        //5.查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (employee1.getStatus() == 0) {
            return R.error("账号已禁用");
        }

        //6.登录成功，将员工id存入session并返回登录成功结果
        request.getSession().setAttribute("employee", employee1.getId());
        return R.success(employee1);
    }


    /**
     * 员工退出
     *
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request) {
        //清理session中保存的当前登录员工id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("新增员工,员工信息为{}", employee.toString());

        //设置初始密码为123456，需要进行MD5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //获取当前登录用户的id
        Long empId = (Long) request.getSession().getAttribute("employee");

        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");

    }

    /**
     * 员工信息分页查询
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page={},pageSize={},name={}", page, pageSize, name);

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();
        //添加过滤条件
        lqw.like(!StringUtils.isEmpty(name), Employee::getName, name);
        //添加排序条件
        lqw.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo, lqw);


        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工启用状态
     * 通用的update方法
     *
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        log.info(employee.toString());

        //设置更新时间和更新人
        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateUser(empId);
        employee.setUpdateTime(LocalDateTime.now());
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");

    }

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable int id) {
        log.info("根据id查询员工信息,id为: {}", id);
        Employee employee = employeeService.getById(id);
        return R.success(employee);
    }

}


